Abstract
In this paper, we present a decision feedback equalizer (DFE) that uses the quadrature components of 8-VSB signals in ATSC systems to mitigate multipath distortion efficiently. Unlike the conventional DFE structure for 8-VSB signals in which a real-valued feedback filter is used with real-valued decisions, the proposed DFE uses a complex-valued feedback filter with a complex-valued feedback sample generator. Due to the difficulty in analyzing a recursive system, we present a limited performance analysis on the proposed algorithm that a well-modeled feedback filter successfully cancels multipath channels with quadrature leakages in the absence of noise. For the performance comparison with conventional DFEs in realistic environments, we uses simulation methods.
| Original language | English |
|---|---|
| Article number | 4586429 |
| Pages (from-to) | 394-400 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Broadcasting |
| Volume | 54 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2008 Sept |
Bibliographical note
Funding Information:Manuscript received March 20, 2008; revised May 12, 2008. First published August 4, 2008; last published August 20, 2008 (projected). This work was supported by a Korea University Grant and the Brain Korea 21 project in 2008. The author is with the Division of Computer and Communications Engineering, Korea University, Seoul 136-701, Korea (e-mail: wchung@korea.ac. kr). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TBC.2008.2001149
Keywords
- 8-VSB
- Decision feedback equalizer
- Feedback sample generator
- Hubert transformation filter
- Vestigial sideband
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering